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June 16th, 2026 :: 8:42 am CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated June 16th at 7:54 am 
Temperature:66°F Dew Point:54°F
Barometer:29.8 inHg Wind:N 26 Mph
Humidity:63.8% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Jun 16th
Wednesday
Jun 17th
Thursday
Jun 18th
Friday
Jun 19th
Saturday
Jun 20th
Mostly Sunny Thundershowers Mostly Sunny Mostly Sunny Mostly Sunny
73°F
82°F
57°F
71°F
60°F
72°F
56°F
74°F
55°F
 
 Decatur Detailed Weather Forecast  
 
Tuesday, June 16th, 2026
Morning Temperature: 64°F
Mostly sunny. Slight chance of a thunderstorm. Windy.
Afternoon Temperature: 73°F
Sunny with cloudy periods with a chance of showers or thundershowers. Windy.
Evening Temperature: 63°F
Mostly clear with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Wednesday, June 17th, 2026
Overnight Temperature: 57°F
Clear with cloudy periods.
Morning Temperature: 63°F
Cloudy with a chance of showers. Windy at times.
Afternoon Temperature: 79°F
A mix of cloud and sun with a chance of showers or thundershowers. Wind 25 to 40 mph.
Evening Temperature: 76°F
Clear with cloudy periods with a few showers. Chance of a thunderstorm. Wind 25 to 40 mph.
Thursday, June 18th, 2026
Overnight Temperature: 67°F
Clear with a chance of showers. Windy at times.
Morning Temperature: 64°F
Sunny. Windy at times.
Afternoon Temperature: 68°F
A mix of cloud and sun. Windy at times.
Evening Temperature: 64°F
A mix of clear and cloudy skies.
Friday, June 19th, 2026
Overnight Temperature: 57°F
Clear.
Morning Temperature: 63°F
Sunny.
Afternoon Temperature: 71°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 63°F
Clear.
Saturday, June 20th, 2026
Overnight Temperature: 56°F
Clear.
Morning Temperature: 64°F
Mostly sunny.
Afternoon Temperature: 73°F
A mix of sun and cloud.
Evening Temperature: 67°F
Clear with cloudy periods. Windy at times.
Sunday, June 21st, 2026
Overnight Temperature: 63°F
A mix of clear and cloudy skies. Windy at times.
Morning Temperature: 64°F
Cloudy with a few showers. Windy.
Afternoon Temperature: 74°F
A mix of sun and cloud with showers likely. Chance of a thunderstorm. Windy.
Evening Temperature: 65°F
A mix of cloudy and clear skies with a chance of showers. Windy at times.
Monday, June 22nd, 2026
Overnight Temperature: 57°F
Mostly clear. Windy at times.
Morning Temperature: 62°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 70°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 63°F
Mostly clear.
Tuesday, June 23rd, 2026
Overnight Temperature: 55°F
Clear with cloudy periods.
Morning Temperature: 61°F
A mix of sun and cloud.
Afternoon Temperature: 71°F
A mix of sun and cloud.
Evening Temperature: 68°F
Clear.
Wednesday, June 24th, 2026
Overnight Temperature: 60°F
Clear.
Morning Temperature: 66°F
Sunny.
Afternoon Temperature: 77°F
Mostly sunny.
Evening Temperature: 71°F
Mostly clear.





 

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This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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